3' processing is an essential step in the maturation of all messenger RNAs (mRNAs) and is a tightly coupled two-step reaction: endonucleolytic cleavage at the poly(A) site is followed by the addition of a poly(A) tail, except for metazoan histone mRNAs, which are cleaved but not polyadenylated. The recognition of a poly(A) site is coordinated by the sequence elements in the mRNA 3' UTR and associated protein factors. In mammalian cells, three well-studied sequence elements, UGUA, AAUAAA, and GU-rich, are recognized by three multisubunit factors: cleavage factor I(m) (CFI(m) ), cleavage and polyadenylation specificity factor (CPSF), and cleavage stimulation factor (CstF), respectively. In the yeast Saccharomyces cerevisiae, UA repeats and A-rich sequence elements are recognized by Hrp1p and cleavage factor IA. Structural studies of protein-RNA complexes have helped decipher the mechanisms underlying sequence recognition and shed light on the role of protein factors in poly(A) site selection and 3' processing machinery assembly. In this review we focus on the interactions between the mRNA cis-elements and the protein factors (CFI(m) , CPSF, CstF, and homologous factors from yeast and other eukaryotes) that define the poly(A) site. WIREs RNA 2011 2 732-747 DOI: 10.1002/wrna.88 For further resources related to this article, please visit the WIREs website.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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